xref: /openbmc/linux/drivers/gpu/drm/nouveau/nvkm/engine/nvdec/base.c (revision 98a34d99)

/*
 * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */
#include "priv.h"

#include <core/firmware.h>
#include <subdev/top.h>
#include <engine/falcon.h>

static int
nvkm_nvdec_oneinit(struct nvkm_engine *engine)
{
	struct nvkm_nvdec *nvdec = nvkm_nvdec(engine);
	struct nvkm_subdev *subdev = &nvdec->engine.subdev;

	nvdec->addr = nvkm_top_addr(subdev->device, subdev->index);
	if (!nvdec->addr)
		return -EINVAL;

	/*XXX: fix naming of this when adding support for multiple-NVDEC */
	return nvkm_falcon_v1_new(subdev, "NVDEC", nvdec->addr,
				  &nvdec->falcon);
}

static void *
nvkm_nvdec_dtor(struct nvkm_engine *engine)
{
	struct nvkm_nvdec *nvdec = nvkm_nvdec(engine);
	nvkm_falcon_del(&nvdec->falcon);
	return nvdec;
}

static const struct nvkm_engine_func
nvkm_nvdec = {
	.dtor = nvkm_nvdec_dtor,
	.oneinit = nvkm_nvdec_oneinit,
};

int
nvkm_nvdec_new_(const struct nvkm_nvdec_fwif *fwif, struct nvkm_device *device,
		int index, struct nvkm_nvdec **pnvdec)
{
	struct nvkm_nvdec *nvdec;
	int ret;

	if (!(nvdec = *pnvdec = kzalloc(sizeof(*nvdec), GFP_KERNEL)))
		return -ENOMEM;

	ret = nvkm_engine_ctor(&nvkm_nvdec, device, index, true,
			       &nvdec->engine);
	if (ret)
		return ret;

	fwif = nvkm_firmware_load(&nvdec->engine.subdev, fwif, "Nvdec", nvdec);
	if (IS_ERR(fwif))
		return -ENODEV;

	nvdec->func = fwif->func;
	return 0;
};